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    <li><a href="index.html">PHP Manual</a></li>
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  <div id="layout-content"><div id="function.gzopen" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">gzopen</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">gzopen</span> &mdash; <span class="dc-title">Open gz-file</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.gzopen-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>gzopen</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$filename</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$mode</code></span>, <span class="methodparam"><span class="type">int</span> <code class="parameter">$use_include_path</code><span class="initializer"> = 0</span></span>): <span class="type"><span class="type">resource</span>|<span class="type"><span class="type false">false</span></span></span></div>

  <p class="para rdfs-comment">
   Opens a gzip (.gz) file for reading or writing. 
  </p>
  <p class="para">
   <span class="function"><strong>gzopen()</strong></span> can be used to read a file which is
   not in gzip format; in this case <span class="function"><a href="function.gzread.html" class="function">gzread()</a></span> will
   directly read from the file without decompression.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.gzopen-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">filename</code></dt>

     <dd>

      <p class="para">
       The file name.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">mode</code></dt>

     <dd>

      <p class="para">
       As in <span class="function"><a href="function.fopen.html" class="function">fopen()</a></span> (<code class="literal">rb</code> or 
       <code class="literal">wb</code>) but can also include a compression level 
       (<code class="literal">wb9</code>) or a strategy: <code class="literal">f</code> for
       filtered data as in <code class="literal">wb6f</code>, <code class="literal">h</code> for
       <code class="literal">Huffman only compression</code> as in <code class="literal">wb1h</code>.
       (See the description of <code class="literal">deflateInit2</code>
       in <var class="filename">zlib.h</var> for 
       more information about the strategy parameter.)
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">use_include_path</code></dt>

     <dd>

      <p class="para">
       You can set this optional parameter to <code class="literal">1</code>, if you
       want to search for the file in the <a href="ini.core.html#ini.include-path" class="link">include_path</a> too.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.gzopen-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a file pointer to the file opened, after that, everything you read
   from this file descriptor will be transparently decompressed and what you 
   write gets compressed.
  </p>
  <p class="para">
   If the open fails, the function returns <strong><code>false</code></strong>.
  </p>
 </div>

 <div class="refsect1 examples" id="refsect1-function.gzopen-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-886">
    <p><strong>示例 #1 <span class="function"><strong>gzopen()</strong></span> Example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br />$fp&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #0000BB">gzopen</span><span style="color: #007700">(</span><span style="color: #DD0000">"/tmp/file.gz"</span><span style="color: #007700">,&nbsp;</span><span style="color: #DD0000">"r"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

   </div>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.gzopen-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="function.gzclose.html" class="function" rel="rdfs-seeAlso">gzclose()</a> - Close an open gz-file pointer</span></li>
   </ul>
  </p>
 </div>

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